Printed regenerated cellulose and alpha method of producing it



Oct. 3, 1933. J. voss 1,929,394

PRINTED REGENERATED CELLULOSE AND A METHOD OF PRODUCING IT Filed March51, 1953 PART/AL V/ICUUN Julius Voss Patented Oct. 3, 1933 UNITED STATESPATENT OFFICE PRINTED REGENERATED CELLULOSE AND A DIETHOD OF PRODUCINGIT Julius Voss, Wiesbadcn-Biebrich, Germany, as signor to The ViskingCorporation, Chicago, 111., a corporation of Virginia Application March31, .1933, Serial No. 663,822, and in Germany November 12, 1931 8Claims. (Cl. 101-426) of the invention and of apparatus for carrying outthe process thereof is shown in the accompanying drawingfin which:

Fig. 1 is a perspective view of a tubular article, as a sausagecasing,marked in accordance with the invention, and

Fig. 2 is a vertical section of a vacuumized heating chamber fortreatment of the material.

The invention is particularly adapted to be employed in the printing ofdata on sausage casings which are formed from regenerated cellulose butthe invention is limited to this use only to the extent indicated in theappended claims.

It is known that one may print on sheets of regenerated cellulose withinks, colors orpaints having an oil base. These inks, colors or paintsadhere to the regenerated cellulose under normal conditions and are notreadily washed therefrom. Heretofore, however, if the printedregenerated cellulose were placed in hot water,

the printed data was loosened from the regenerated cellulose. Therefore,the use of linlm, colors or paints of the character described on sausagecasings of regenerated cellulose was of no particular advantage as thesausages were usually subjected-to cooking and smoking operations. Inthe smoking operation, the inks, colors or paints had a tendency tobecome discolored. Therefore, it has been impossible heretofore toproduce satisfactory imprints onsausage casings formed from'regeneratedcellulose as the imprints would be injured or destroyed during thecoohng and smoking processes.

I have now learned that the inks, colors or paints of the characterdescribed, may be treated so that they will not be injured or discoloredto any appreciable extent by the cooking and smoking operations. Thus,when the inks, colors or paints of the character described are employedin the printing of data on articles formed of ,regenerated cellulose,they will resist the deteriorating efiects of the smoking and dryingoperations if, after a surface drying of the printed data has beeneffected, they are subjected for a short time to a relatively hightemperature, it being preferable that the air be maintained relativelymoist or humid so that the surface of the regenerated cellulose does notbecome too dry or brittle. For example, the imprints, a short time afterthe printing. operation, may be subjected for about one hour to atemperature of approximately 100 C. The imprints will then acquire suchcharacteristics that they will withstand the cooking and smokingoperations with no injury'to them. In another iorm of the invention, theprinted regenerated cellulose is stored or seasoned for aboutfourteendays and then subjected for about one hour to a temperature ofaproximately 60 C; in a partial vacuum. The imprints will then becomeresistant to the deteriorating tendencies of the smoking and cookingoperations.

All inks or colors in which the vehicle for the pigment comprisesquick-drying oxidizing oils are particularly adapted for producingimprints embodying the invention. v

In the drawing there is shown a tubular article, as a sausage casing, ofregenerated cellulose having lettering as 14 formed thereon in anydesired manner, utilizing an'oxidizing oil bearing a pigment. At 11 isshown a chamber or oven which may be tightly closed and the air thereinrarefied as by a pump, not shown, connected to suction pipe 13. To heatthe chamber '11, there is shown a coil 12 in which a heating medium assteam may be circulated whereby the temperature of the air in thechamber 12 may be raised to approximately 100 C.

. While I have shown and described certain embodiments of my invention,it is to be understood that it is capable of many modifications.Changes, therefore in the construction and arrangement may be madewithout departing from the spirit and scope of the invention asdisclosed in the appended claims, in which it is my intention to claimall novelty inherent in my invention as broadly as possible, in view ofthe prior art.

Iclaim: 1. A process for producing imprints on articles of regeneratedcellulose, which process. comprises drying the surfaces of the imprints,and then subjecting them to a high temperature in a relatively humidatmosphere. I

2. A procc ss for producing imprints on articles of regeneratedcellulose, which process comprises forming said imprints from colorshaving an oil base, and then subjecting the printed matter to a highertemperature in a relatively'humidatmospher'e after the printingoperation. v 4 3.4 process for producing imprints on articles ofregenerated cellulose, which process comprises printing on saidcellulose with a color having an oil base, then permitting the surfaceof the printed matter to dry, and then subjecting the printed matter toa high temperature.

4. A process of producing imprints on articles 01' regeneratedcellulose, which process comprises subjecting the imprintedmaterial to atemperature of approximately 100 C. in a relatively humid atmosphereafter the printing operation.

5. A process for producing substantially permanent imprints on articlesof regenerated cellulose, which process includes the step of heating theprinted material to a high temperature in partial vacuum.

6. A process for producing substantially permafourteen days after theprinting operation, and

then subjecting them to a higher temperature than the temperature towhich they are subjected while being seasoned.

8. An article formed from regenerated cellulose and having dataprintedthereon with a color having an oil base resistant to boiling.

JULIUS VGSS.

ISISOLAIMEIR 1,929,3 94.J'ulius"Voss, Wiesbaden-Biebrich, Germany.CELLULosE AND A METHOD or PRODUCING I'r.

PRINTED REGENEBATED Patent dated October 3,

1933. Disclaimer filed December 23, 1935, by the assignee, The ViskingCorporation.

, Hereby disclaims claim 8 of said patent and the subject matter of saidclaim 8.

[W Gazetie January 14, 1986.]

